作者:ABHISHEK KUMAR 12 年以前
322
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POINT TO POINT PORT
HALF-DUPLEX ON SHARED MEDIA
DESIGNATED PORT
ROOT PORT
EDGE PORT
NO LONGER EDGE WHEN BPDUs RECIEVED
HOST PORT
DISCARDING
BACKUP
ALTERNATE
MAX-AGE (20 sec)
FORWADING (15 sec)
HELLO (2 sec)
FORWARDING
LEARNING
LISTENING
BLOCKED
DISABLED
BLOCKING
DESIGNATED
ROOT
DETECTS BY SENDING KEEPALIVES
1 WAY OR DIRECTIONAL LINK DETECTION
WITH: PORT BECOME INCONSISTENT
WITHOUT: PORT STARTS FORWARDING
DETECTS LOSS OF BPDUs